CA1168271A - Vibration-damped power transmission device - Google Patents
Vibration-damped power transmission deviceInfo
- Publication number
- CA1168271A CA1168271A CA000393171A CA393171A CA1168271A CA 1168271 A CA1168271 A CA 1168271A CA 000393171 A CA000393171 A CA 000393171A CA 393171 A CA393171 A CA 393171A CA 1168271 A CA1168271 A CA 1168271A
- Authority
- CA
- Canada
- Prior art keywords
- vibration
- mandrel
- transmission device
- coiled portion
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1208—Resilient supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Vibration Prevention Devices (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
ABSTRACT
A vibration-damped power transmission device adapted to transmit power from a prime mover such as motor, inter-nal combustion engine and the like, which causes a vibratory motion, to a driven body, said power transmission device being supported on a support frame which is to be prevented from vibration, characterized in that at least two vibration dampers are disposed between the housing of said power trans-mission device and said support frame, said vibration damper comprises a mandrel, a mass member having a cylindrical inner surface enclosing said mandrel, and at least one damping coil spring inserted between said mandrel and said cylindrical inner surface, each of said springs consisting of at least one small coiled portion engaged with or fixed to said mandrel, at least one large coiled portion engaged with or fixed to said cylindrical inner surface and at least one conically and spirally coiled portions integrally connecting said small coiled portion and said large coiled portion.
A vibration-damped power transmission device adapted to transmit power from a prime mover such as motor, inter-nal combustion engine and the like, which causes a vibratory motion, to a driven body, said power transmission device being supported on a support frame which is to be prevented from vibration, characterized in that at least two vibration dampers are disposed between the housing of said power trans-mission device and said support frame, said vibration damper comprises a mandrel, a mass member having a cylindrical inner surface enclosing said mandrel, and at least one damping coil spring inserted between said mandrel and said cylindrical inner surface, each of said springs consisting of at least one small coiled portion engaged with or fixed to said mandrel, at least one large coiled portion engaged with or fixed to said cylindrical inner surface and at least one conically and spirally coiled portions integrally connecting said small coiled portion and said large coiled portion.
Description
116~Z71 BACKGROUND OF THE INVENTION
The present invention relates to a vibration-damped power transmission device~ and more particularly to a vibration-damped power transmission device for transmitting power from a prime mover such as motor, internal combustion engine and the like, which is a source of vibration.
The power transmission device for a prime mover such as internal combustion engine or the like transmits vibratory energy from the prime mover to the support frame s ~ as the frame of a motorcycle or other vehicle when the trans-mission device is directly mounted on the support frame.
Consequently, vibrations from the source are immediately transmitted to the support frame, vibrating the body of a driver, making him uncomfortable and sometimes imparing his helth after a long period of use. Attempts have here-tofore been made to isolate the vibrations from the prime movers and their transmission devices but there has been no satisfactory ~olution proposed yet.
BRIEF SUMMARY OF T~E INVENTION
It is, therefore, an object of the invention to provide a vibration-damped transmission device for a prime mover ~uch as motor, internal combustion engine and the like, whereby vibrations from the ~ource are prevented from transmitting to the support frame such as motor cycle or the like.
Briefly, the present invention provides a vibration-~J
1~68Z7:1 damped power transmission device adapted to transmit powerfrom a prime mover such as internal combustion or motor to a driven body such as ~he rotating shaft of a motor-cycle wheel. The vibration from the prime mover is pre-vented from transmitting to the support frame such as frame of a motorcycle by at least two vibration damper inserted between the hou~ing of the transmission device, which may support the prime mover, and the support frame. The vib-ration damper comprises a mandrel, a mass member ha~ng a cylindrical inner surface enclosing or surrounding said mantrel and one or more damping springs inserted between the mandrel and the cylindrical inner surface. In one embodiment, each damping spring consists of a small coiled portion fixed to or engaged with the mandrel, a large coiled portion fixed to or engaged with the inner cylindric-al surface and a conically and spirally coiled portion integrally connected with said small and large coiled portions. In another embodiment, each damping spring includes two small coiled portions, one large coiled portion and two conically and ~pirally coiled portions.
With the vibration damper as constructed according to the present invention, the vibrations from the engine or the like, which would otherwise be transmitted through the transmission device, are substantially damped or absorbed.
The invention will now be described in details in the 116~271 following, making reference to the accompanying drawings.
BRIEF EXPLANATION OF THE DRAWINGS
Fig. 1 is a side elevational view of a motorcycle in-corporating a vibration-damped power transmission device according to the present invention;
Fig. 2 is an enlarged perspective view of the portion A of Fig. l;
Fig. 3 is an enlarged horizontal cross sectional view of the portion B of Fig. 2;
Fig. 4 is a partly broken cross sectional view taken along the line I-I of Fig. 3;
Fig. 5 is a perspective view of another emb~odiment of a vibration-damped power transmission device;
Fig. 6 is an enlarged horizontal cross sectional view of the portion C of Fig. 5;
Fig. 7 is a partly broken cross sectional view taken along the line II-II of Fig. 6;
Fig. 8 is a horizontal cross sectional view of a fur-ther embodiment of the invention;
Fig. 9 is a partly broken cross sectional view taken along the line III-III of Fig. 8;
Fig. 10 is a perspective view of a yet further embodi-ment of the present invention;
Fig. 11 is an enlarged horizontal cross sectional view of the portion D of Fig. 10;
Fig. 12 is a cross partly broken sectional view taken ~16~3Z7i along the line IV-IV of Fig. 11;
Fig. 13 is a side elevational view of an additional e~bodiment of the invention applied to a motorcycle;
Fig. 14 is an enlarged perspective view of the portion E of Fig. 13;
Fig. 15 is a partly broken away enlarged vertical cross sectional view of the portion F of Fig. 14;
Fig. 16 is a partly broken away cross sectiona~ view taken along the line V-V of Fig. 15; ;~
Fig. 17 is a partly broken away vertical croE~ tion-al view of a further additional embodiment of the p~*sent invention;
Fig. 18 is a partly broken away cross sectional view taken along the line VI-VI of Fig. 17;
Fig. 19 i5 an end view of a spring utilized in the present invention;
Fig. 20 is a side view of the spring shown in Fig. 19;
Fig. 21 is a cross sectional view taken along ~he line VII-VII of Fig. 19;
Figs. 22 and 23 are cross sectional views of an embodi-ment incorporating the spring shown in Figs. 19 - 21, il-lustrating the damper in use;
Fig. 24 is an end view of another spring utilized in the present invention;
Fig. 25 is a side view of the spring shown in Fig. 24;
Fig. 26 is a cross sectional view taken along the line ~68271 VIII-VIII of Fig. 24;
Figs. 27 and 28 are cross sectional views of an embodi-nent incorporating the spring ~hown in Figs. 24 - 26, illus-trating vibration damper in use;
Fig. 29 is ah end view of a further spring utilized in the present invention;
Fig. 30 is a side vlew of the spring shown in Fig. 30;
Fig. 31 i8 a cross sectional view taken ~long the line IX-IX of Fig. 29;
Figs. 32 and 33 are cro~s sectional views of ~-damping device incorporating the ~pring illu~trated in Figs. 29 - 31;
Fig. 34 is an end view of a yet further spring utilized in the present invention;
Fig. 35 i8 a side view of the spring shown in Fig. 34;
Fig. 36 is a cross sectional view taken along the line X-X of Fig. 34;
Figs. 37 and 38 ar~ cro~s sectional views of a damping device incorporating the spring illustrated in Figs. 34 -36;
Figs. 39 and 40 are ~ide views of springs which are prior art springs propo~ed by the inventor, (on page with Fig. 36).
DETAILED EXPLANATI~N OF THE INVENTION
~ hroughout the entire specification and the drawings, similar portions will be indicated by the same reference numerals unless otherwise stated.
Fig~. 1 through 12 illustrate several embodiment~ of A
. .
116~271 vibration-damped transmission devices according to the in-vention, mounted on a vertical member of a motorcycle.
As shown in Fig. 1, the motorcycle is provided with a ver-tical member 8 on which an internal combustion engine 1 and a transmission device 1' thereof are mounted by means of a vertical connecting member 9.
Referring to Figs. 2 through 4 which illustrate the first embodiment of the pre~ent invention, the tran~i~sion device 1' ha~ a horizontal output shaft(not number~
protruded from one lateral wall of the device 1'. The transmission device 1' is provided with a first pair of aligned protrusion~ 10,10 at the upper corners and a second pair of aligned protrusions 10,10 at the lower corners.
The upper and lower portions of the connecting member 9 and the protrusions 10,10,10,10 constitute a pair of vibra-tion damper~ 2,2 according to the present invention. As the vibration damper at the lower portion has fiubstantially the same construction as that at the upper portion, only the upper vibration damper will be described in details.
Referring to Figs. 3 and 4, the protrusions 10,10 have axially aligned bores in which ends 3',3' of a cylindrical mandrel 3 are fixedly supported. The connecting member 9 has a mass member 5 at the upper portion which extends in between the protrusions 10. The mass member 5 has an inner cylindrical wall or surface 6 concentrically disposed about the cylindrical mandrel 3. Disposed between the ~1~71 mandrel 3 and the inner surface 6 of the mass member 5 are a pair of a vibration damping springs 7,7 at locations close to the opposite ends of the mass member 5 and retained by stop rings or other fixing or engaging means on the outer surface 4 of the mandrel 3 and on the inner surface 6 of the mass member 5. The springs 7,7 not only absorb or damp the vibrations transmitted from the engine 1 and the tran8mi~sion device 1' but also support the weight Q~ them.
Accordingly, each 8pring is made of a spring meta~ ~ ~as steel having a sufficient strength to support the ~ .
The 8pring has a construction as illustrated in Figff~ 19 through 21 or Figs. 29 through 36 depending on the weight to be supported and the application of the vibration damper.
In Figs. 19 - 21, the 8pring 7 consists of a large coiled portion 18 with close turns, conically and gpirally coiled portions 20, 20 with spaced turns and small c~led portions 19,19 with close turns. One sides of these por-tions 18',20',20',19',19' are aligned in a line to have an upwardly deviated or localized mass distribution~
Alternatively, the spring illustrated in Figs. 29 through 31 may be utilized in which the axis X2 of the large coiled portion 18 iS deviated upwardly to a les~er degree from the axis Xl of the small coiled portions 19,19, as compared with the foregoing example, depending on the application.
Referring back to Figs. 3 and 4, when the weight of the engine 1 and the transmission 1' are supported by the . - 7 -~i6~;~7`1 frame 8 and the connecting member 9 by way of the damper 2, the relative arrangement of the various members will sub-stantially assume the position as illustrated in Figs. 3 and 4 when the spring 7,7 illustrated in Figs. 19 - 21 or 29 - 31 are used in up-side-down position.
Another embodiment is ellustrated in Figs. 5 through 7, wherein the mass members 5 form parts of the transmission device 1' while the protrusions 12,12,12,12 form pa~ts of the connecting member 11. In this embodiment the- ~
distribution of the ~prings 7,7 is deviated upwardly ~8 illustrated in Fiqs. 19 - 21 or Figs. 29 - 31.
A further embodiment is illustrated in Figs. 8 and 9 wherein the protrusions 14,14 of the connecting member 13 form supports or the mandrel 3 and the mass members 5,5,5,5 orm parts of the transmission device 1'. In this embodiment, the ends 3,3' of the mandrel 3 support the transmission device 1' by means of the springs 7,7.
- Figs. 10 through 12 illu~trate a yet further embodi-ment, wherein the protrusions of the connecting membo~ 15 form mass member~ 5,5 and the protrusions of the tran~mis-sion device 1' also form mass members 5,5,5,5. The transmis~ion device 1' is ~upported by the ends 3',3' of the mandrel 3 by the outermost pair of springs 7,7 and the mandrel 3 is in turn supported by the connecting member 15 by means of the inwardly located pair of springs 7,7.
Figs. 13 through 18 illustrate several embodiments applied to a motorcycle wherein the transmission device according to the present invention is supported in hori-zontal position.
Referring to Figs. 13 through 16, a pair of connect-ing members 17, 17 are supported by a horizontal member 8 of the motorcycle. Short mandrels 3,3,3,3 are protruded from lateral surfaces of the transmission device 1' which is integrally formed with an internal combustion engine 1.
The horizontal members 17,17 are provided at their ends with mass members 5,5,5,5 which have horizontally extend-ing cylindrical inner surfaces 6,6,6,6 into which the mandrels 3,3,3,3 are protruded. Damping springs 7,7 similar to that illustrated in Figs. 19 - 21 or Figs.
29 - 31 are disposed and retained between the mandrel 3 and the inner surface 6 of the mass member 5.
Figs. 17 and 18 illustrate another embodiment of a vibration damper which may be replaced with the vibration dampers illustrated in Figs. 14 - 16. A pair of damping springs 7,7 are disposed and retained between the mandrel 3 and the inner surface 5 of the mass member 5 of each vibration damper 2 and the small coiled portions and the large coiled portions of the springs are fixed to or engaged with the outer cylindrical surface 4 of the mandrel 3 and the inner surface 6, respectively.
Figs. 22 and 23 illustrate the use of the spring _ g _ ~16~'~7i illustrated in Figs. 19 - 21 which have already been describ-ed. .~ssuming that the ~,andrel 3 is fixed and the weight of the trnasmission device 1' is not placed on the springs 7,7, the springs will take the natural position as shown in Fig.
22. ~hen a pressure P is applied by placing the weight of the transmission device 1' thereon the springs are pressed down to the position as shown in Fig. 23 and the vibration damper 2 absorbs or damps the vibrations when the engine is operated.
Figs. 24 through 26 illustrate a still further example of the spring which may be adapted in the present invention, wherein the spring 7 consists of a large coiled portion 18 with close turns and adapted to be fixed or engaged with the inner surface a mass member, a small coiled portion 19 with close turns and adapted to be fixed or engaged with the outer surface of the mandrel and a conically and spiral-ly coiled portion 20 with spaced turns. The mass ditribu-tion is off the axis so that the one sides 18',19',20' of the spring align in a Iine. Figs. 27 and 28 illustrate the use of the springs according to Figs. 24 - 26, Figs.
32 and 33 illustrate the use of the spring is illustrated in Figs. 29 - 31 which has already been described. The axes Xl, X2 and X3 align in a line when supporting the weight of the engine and the transmission device.
Figs. 34 through 36 illustrate a modification of the spring illustrated in Figs. 24 - 26 and the mass deviation ~ ' ) 1~6B~71 iB lessened in this example. Figs. 37 and 38 illustrate the use of the spring shown in Fig. 34 - 36.
Incidentally, Figs. 3~ and 40 illustrate two forms of the prior art springs which are not employed in the present invention It should be noted that there are a number of modifi-cations within the spirit of the present invention.
~'
The present invention relates to a vibration-damped power transmission device~ and more particularly to a vibration-damped power transmission device for transmitting power from a prime mover such as motor, internal combustion engine and the like, which is a source of vibration.
The power transmission device for a prime mover such as internal combustion engine or the like transmits vibratory energy from the prime mover to the support frame s ~ as the frame of a motorcycle or other vehicle when the trans-mission device is directly mounted on the support frame.
Consequently, vibrations from the source are immediately transmitted to the support frame, vibrating the body of a driver, making him uncomfortable and sometimes imparing his helth after a long period of use. Attempts have here-tofore been made to isolate the vibrations from the prime movers and their transmission devices but there has been no satisfactory ~olution proposed yet.
BRIEF SUMMARY OF T~E INVENTION
It is, therefore, an object of the invention to provide a vibration-damped transmission device for a prime mover ~uch as motor, internal combustion engine and the like, whereby vibrations from the ~ource are prevented from transmitting to the support frame such as motor cycle or the like.
Briefly, the present invention provides a vibration-~J
1~68Z7:1 damped power transmission device adapted to transmit powerfrom a prime mover such as internal combustion or motor to a driven body such as ~he rotating shaft of a motor-cycle wheel. The vibration from the prime mover is pre-vented from transmitting to the support frame such as frame of a motorcycle by at least two vibration damper inserted between the hou~ing of the transmission device, which may support the prime mover, and the support frame. The vib-ration damper comprises a mandrel, a mass member ha~ng a cylindrical inner surface enclosing or surrounding said mantrel and one or more damping springs inserted between the mandrel and the cylindrical inner surface. In one embodiment, each damping spring consists of a small coiled portion fixed to or engaged with the mandrel, a large coiled portion fixed to or engaged with the inner cylindric-al surface and a conically and spirally coiled portion integrally connected with said small and large coiled portions. In another embodiment, each damping spring includes two small coiled portions, one large coiled portion and two conically and ~pirally coiled portions.
With the vibration damper as constructed according to the present invention, the vibrations from the engine or the like, which would otherwise be transmitted through the transmission device, are substantially damped or absorbed.
The invention will now be described in details in the 116~271 following, making reference to the accompanying drawings.
BRIEF EXPLANATION OF THE DRAWINGS
Fig. 1 is a side elevational view of a motorcycle in-corporating a vibration-damped power transmission device according to the present invention;
Fig. 2 is an enlarged perspective view of the portion A of Fig. l;
Fig. 3 is an enlarged horizontal cross sectional view of the portion B of Fig. 2;
Fig. 4 is a partly broken cross sectional view taken along the line I-I of Fig. 3;
Fig. 5 is a perspective view of another emb~odiment of a vibration-damped power transmission device;
Fig. 6 is an enlarged horizontal cross sectional view of the portion C of Fig. 5;
Fig. 7 is a partly broken cross sectional view taken along the line II-II of Fig. 6;
Fig. 8 is a horizontal cross sectional view of a fur-ther embodiment of the invention;
Fig. 9 is a partly broken cross sectional view taken along the line III-III of Fig. 8;
Fig. 10 is a perspective view of a yet further embodi-ment of the present invention;
Fig. 11 is an enlarged horizontal cross sectional view of the portion D of Fig. 10;
Fig. 12 is a cross partly broken sectional view taken ~16~3Z7i along the line IV-IV of Fig. 11;
Fig. 13 is a side elevational view of an additional e~bodiment of the invention applied to a motorcycle;
Fig. 14 is an enlarged perspective view of the portion E of Fig. 13;
Fig. 15 is a partly broken away enlarged vertical cross sectional view of the portion F of Fig. 14;
Fig. 16 is a partly broken away cross sectiona~ view taken along the line V-V of Fig. 15; ;~
Fig. 17 is a partly broken away vertical croE~ tion-al view of a further additional embodiment of the p~*sent invention;
Fig. 18 is a partly broken away cross sectional view taken along the line VI-VI of Fig. 17;
Fig. 19 i5 an end view of a spring utilized in the present invention;
Fig. 20 is a side view of the spring shown in Fig. 19;
Fig. 21 is a cross sectional view taken along ~he line VII-VII of Fig. 19;
Figs. 22 and 23 are cross sectional views of an embodi-ment incorporating the spring shown in Figs. 19 - 21, il-lustrating the damper in use;
Fig. 24 is an end view of another spring utilized in the present invention;
Fig. 25 is a side view of the spring shown in Fig. 24;
Fig. 26 is a cross sectional view taken along the line ~68271 VIII-VIII of Fig. 24;
Figs. 27 and 28 are cross sectional views of an embodi-nent incorporating the spring ~hown in Figs. 24 - 26, illus-trating vibration damper in use;
Fig. 29 is ah end view of a further spring utilized in the present invention;
Fig. 30 is a side vlew of the spring shown in Fig. 30;
Fig. 31 i8 a cross sectional view taken ~long the line IX-IX of Fig. 29;
Figs. 32 and 33 are cro~s sectional views of ~-damping device incorporating the ~pring illu~trated in Figs. 29 - 31;
Fig. 34 is an end view of a yet further spring utilized in the present invention;
Fig. 35 i8 a side view of the spring shown in Fig. 34;
Fig. 36 is a cross sectional view taken along the line X-X of Fig. 34;
Figs. 37 and 38 ar~ cro~s sectional views of a damping device incorporating the spring illustrated in Figs. 34 -36;
Figs. 39 and 40 are ~ide views of springs which are prior art springs propo~ed by the inventor, (on page with Fig. 36).
DETAILED EXPLANATI~N OF THE INVENTION
~ hroughout the entire specification and the drawings, similar portions will be indicated by the same reference numerals unless otherwise stated.
Fig~. 1 through 12 illustrate several embodiment~ of A
. .
116~271 vibration-damped transmission devices according to the in-vention, mounted on a vertical member of a motorcycle.
As shown in Fig. 1, the motorcycle is provided with a ver-tical member 8 on which an internal combustion engine 1 and a transmission device 1' thereof are mounted by means of a vertical connecting member 9.
Referring to Figs. 2 through 4 which illustrate the first embodiment of the pre~ent invention, the tran~i~sion device 1' ha~ a horizontal output shaft(not number~
protruded from one lateral wall of the device 1'. The transmission device 1' is provided with a first pair of aligned protrusion~ 10,10 at the upper corners and a second pair of aligned protrusions 10,10 at the lower corners.
The upper and lower portions of the connecting member 9 and the protrusions 10,10,10,10 constitute a pair of vibra-tion damper~ 2,2 according to the present invention. As the vibration damper at the lower portion has fiubstantially the same construction as that at the upper portion, only the upper vibration damper will be described in details.
Referring to Figs. 3 and 4, the protrusions 10,10 have axially aligned bores in which ends 3',3' of a cylindrical mandrel 3 are fixedly supported. The connecting member 9 has a mass member 5 at the upper portion which extends in between the protrusions 10. The mass member 5 has an inner cylindrical wall or surface 6 concentrically disposed about the cylindrical mandrel 3. Disposed between the ~1~71 mandrel 3 and the inner surface 6 of the mass member 5 are a pair of a vibration damping springs 7,7 at locations close to the opposite ends of the mass member 5 and retained by stop rings or other fixing or engaging means on the outer surface 4 of the mandrel 3 and on the inner surface 6 of the mass member 5. The springs 7,7 not only absorb or damp the vibrations transmitted from the engine 1 and the tran8mi~sion device 1' but also support the weight Q~ them.
Accordingly, each 8pring is made of a spring meta~ ~ ~as steel having a sufficient strength to support the ~ .
The 8pring has a construction as illustrated in Figff~ 19 through 21 or Figs. 29 through 36 depending on the weight to be supported and the application of the vibration damper.
In Figs. 19 - 21, the 8pring 7 consists of a large coiled portion 18 with close turns, conically and gpirally coiled portions 20, 20 with spaced turns and small c~led portions 19,19 with close turns. One sides of these por-tions 18',20',20',19',19' are aligned in a line to have an upwardly deviated or localized mass distribution~
Alternatively, the spring illustrated in Figs. 29 through 31 may be utilized in which the axis X2 of the large coiled portion 18 iS deviated upwardly to a les~er degree from the axis Xl of the small coiled portions 19,19, as compared with the foregoing example, depending on the application.
Referring back to Figs. 3 and 4, when the weight of the engine 1 and the transmission 1' are supported by the . - 7 -~i6~;~7`1 frame 8 and the connecting member 9 by way of the damper 2, the relative arrangement of the various members will sub-stantially assume the position as illustrated in Figs. 3 and 4 when the spring 7,7 illustrated in Figs. 19 - 21 or 29 - 31 are used in up-side-down position.
Another embodiment is ellustrated in Figs. 5 through 7, wherein the mass members 5 form parts of the transmission device 1' while the protrusions 12,12,12,12 form pa~ts of the connecting member 11. In this embodiment the- ~
distribution of the ~prings 7,7 is deviated upwardly ~8 illustrated in Fiqs. 19 - 21 or Figs. 29 - 31.
A further embodiment is illustrated in Figs. 8 and 9 wherein the protrusions 14,14 of the connecting member 13 form supports or the mandrel 3 and the mass members 5,5,5,5 orm parts of the transmission device 1'. In this embodiment, the ends 3,3' of the mandrel 3 support the transmission device 1' by means of the springs 7,7.
- Figs. 10 through 12 illu~trate a yet further embodi-ment, wherein the protrusions of the connecting membo~ 15 form mass member~ 5,5 and the protrusions of the tran~mis-sion device 1' also form mass members 5,5,5,5. The transmis~ion device 1' is ~upported by the ends 3',3' of the mandrel 3 by the outermost pair of springs 7,7 and the mandrel 3 is in turn supported by the connecting member 15 by means of the inwardly located pair of springs 7,7.
Figs. 13 through 18 illustrate several embodiments applied to a motorcycle wherein the transmission device according to the present invention is supported in hori-zontal position.
Referring to Figs. 13 through 16, a pair of connect-ing members 17, 17 are supported by a horizontal member 8 of the motorcycle. Short mandrels 3,3,3,3 are protruded from lateral surfaces of the transmission device 1' which is integrally formed with an internal combustion engine 1.
The horizontal members 17,17 are provided at their ends with mass members 5,5,5,5 which have horizontally extend-ing cylindrical inner surfaces 6,6,6,6 into which the mandrels 3,3,3,3 are protruded. Damping springs 7,7 similar to that illustrated in Figs. 19 - 21 or Figs.
29 - 31 are disposed and retained between the mandrel 3 and the inner surface 6 of the mass member 5.
Figs. 17 and 18 illustrate another embodiment of a vibration damper which may be replaced with the vibration dampers illustrated in Figs. 14 - 16. A pair of damping springs 7,7 are disposed and retained between the mandrel 3 and the inner surface 5 of the mass member 5 of each vibration damper 2 and the small coiled portions and the large coiled portions of the springs are fixed to or engaged with the outer cylindrical surface 4 of the mandrel 3 and the inner surface 6, respectively.
Figs. 22 and 23 illustrate the use of the spring _ g _ ~16~'~7i illustrated in Figs. 19 - 21 which have already been describ-ed. .~ssuming that the ~,andrel 3 is fixed and the weight of the trnasmission device 1' is not placed on the springs 7,7, the springs will take the natural position as shown in Fig.
22. ~hen a pressure P is applied by placing the weight of the transmission device 1' thereon the springs are pressed down to the position as shown in Fig. 23 and the vibration damper 2 absorbs or damps the vibrations when the engine is operated.
Figs. 24 through 26 illustrate a still further example of the spring which may be adapted in the present invention, wherein the spring 7 consists of a large coiled portion 18 with close turns and adapted to be fixed or engaged with the inner surface a mass member, a small coiled portion 19 with close turns and adapted to be fixed or engaged with the outer surface of the mandrel and a conically and spiral-ly coiled portion 20 with spaced turns. The mass ditribu-tion is off the axis so that the one sides 18',19',20' of the spring align in a Iine. Figs. 27 and 28 illustrate the use of the springs according to Figs. 24 - 26, Figs.
32 and 33 illustrate the use of the spring is illustrated in Figs. 29 - 31 which has already been described. The axes Xl, X2 and X3 align in a line when supporting the weight of the engine and the transmission device.
Figs. 34 through 36 illustrate a modification of the spring illustrated in Figs. 24 - 26 and the mass deviation ~ ' ) 1~6B~71 iB lessened in this example. Figs. 37 and 38 illustrate the use of the spring shown in Fig. 34 - 36.
Incidentally, Figs. 3~ and 40 illustrate two forms of the prior art springs which are not employed in the present invention It should be noted that there are a number of modifi-cations within the spirit of the present invention.
~'
Claims (2)
1. A vibration-damped power transmission device adapted to transmit power from a prime mover such as motor, inter-nal combustion engine and the like, which causes a vibratory motion, to a driven body, said power transmission device being supported on a support frame which is to be prevented from vibration, characterized in that at least two vibration dampers are disposed between the housing of said power trans-mission device and said support frame, said vibration damper comprises a mandrel, a mass member having a cylindrical inner surface enclosing said mandrel, and at least one damping coil spring inserted between said mandrel and said cylindrical inner surface, each of said springs consisting of at least one small coiled portion engaged with or fixed to said mandrel, at least one large coiled portion engaged with or fixed to said cylindrical inner surface and at least one conically and spirally coiled portions integrally connecting said small coiled portion and said large coiled portion.
2. A vibration damped power transmission device according to Claim 1, wherein said damping springs are formed from a sufficiently strong metal such as steel and are made ec-centric so as to support the weight acting on said springs.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP185013/1980 | 1980-12-27 | ||
| JP55185013A JPS57118920A (en) | 1980-12-27 | 1980-12-27 | Vibration absorption type power transmission apparatus |
| JP109473/1981 | 1981-07-15 | ||
| JP56109473A JPS5813240A (en) | 1981-07-15 | 1981-07-15 | Spiral spring with removing vibration effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1168271A true CA1168271A (en) | 1984-05-29 |
Family
ID=26449220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000393171A Expired CA1168271A (en) | 1980-12-27 | 1981-12-23 | Vibration-damped power transmission device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4504035A (en) |
| CA (1) | CA1168271A (en) |
| DE (1) | DE3150732A1 (en) |
| FR (1) | FR2497158A1 (en) |
| GB (1) | GB2094244B (en) |
| SE (1) | SE8107372L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2540586B1 (en) * | 1983-02-08 | 1985-06-07 | Ressorts Ind | NEW ASSOCIATION OF A SPRING AND AT LEAST ONE OF ITS CUPS, SAID ASSOCIATION IN PARTICULAR USED TO REALIZE A MAC PHERSON SUSPENSION LEG |
| GB2317432A (en) * | 1996-09-20 | 1998-03-25 | David Driscoll | Coil spring |
| US6547207B1 (en) * | 1999-12-02 | 2003-04-15 | Lord Corporation | Safetied elastomeric sandwich mount for motorcycle engine |
| US7788808B1 (en) | 2005-02-25 | 2010-09-07 | Lord Corporation | Method of making an equipment engine mounting system |
| CN104295646A (en) * | 2014-09-26 | 2015-01-21 | 无锡市天力五金弹簧厂 | Damping spring |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1069004B (en) * | 1959-11-12 | |||
| US1698453A (en) * | 1925-08-03 | 1929-01-08 | Sardeson & La Mere Patents Hol | Engine mounting for automotive vehicles |
| US1819665A (en) * | 1930-01-08 | 1931-08-18 | Vibrachek Company | Vibration reducing device |
| US2084080A (en) * | 1934-05-19 | 1937-06-15 | D Aubarede Paul Charles Marie | Engine mounting |
| US2091842A (en) * | 1936-05-02 | 1937-08-31 | Gen Electric | Induction voltage regulator |
| US2246323A (en) * | 1937-11-06 | 1941-06-17 | Westinghouse Electric & Mfg Co | Shock and vibration proof mounting for control apparatus |
| US2412852A (en) * | 1944-01-28 | 1946-12-17 | Gen Spring Corp | Support device |
| CH264703A (en) * | 1946-03-21 | 1949-10-31 | Cfcmug | An elastic suspension device, intended in particular for parts of apparatus in which vibrations occur. |
| US2586646A (en) * | 1946-03-29 | 1952-02-19 | Thompson Prod Inc | Joint |
| DE1064832C2 (en) * | 1954-06-18 | 1960-02-11 | Suedd Ilo Werk G M B H | Suspension of an engine with a crankshaft built into the engine transmission block on the vehicle frame of two-wheeled vehicles |
| US2929591A (en) * | 1956-12-03 | 1960-03-22 | Gen Motors Corp | Resilient mounting |
| US3084009A (en) * | 1961-05-09 | 1963-04-02 | Sperry Rand Corp | Vibration isolation suspension system |
| US3172630A (en) * | 1962-05-14 | 1965-03-09 | Gen Electric | Force cancelling bearing pedestals using reciprocating masses |
| CH488123A (en) * | 1968-06-08 | 1970-03-31 | Danfoss As | Spring suspension for an enclosed motor compressor |
| SU426084A1 (en) * | 1971-04-23 | 1974-04-30 | Н. В. Григорьев , В. Ф. Иванова Северо Западный заочный политехнический институт | DEVICE FOR VIBRATION |
| US4373602A (en) * | 1980-03-06 | 1983-02-15 | Honda Giken Kogyo Kabushiki Kaisha | Power unit suspension system for motorcycles |
| JPS56138541A (en) * | 1980-03-28 | 1981-10-29 | Seikou Giken Kk | Vibration absorbing structure |
| JPS6052004B2 (en) * | 1980-11-28 | 1985-11-16 | スズキ株式会社 | Engine suspension system for small vehicles |
| JPS5797937A (en) * | 1980-12-11 | 1982-06-17 | Seikou Giken Kk | Vibration free construction in vibration free structure |
| JPS5813240A (en) * | 1981-07-15 | 1983-01-25 | Seikou Giken Kk | Spiral spring with removing vibration effect |
-
1981
- 1981-12-09 SE SE8107372A patent/SE8107372L/en not_active Application Discontinuation
- 1981-12-15 FR FR8123454A patent/FR2497158A1/en not_active Withdrawn
- 1981-12-17 GB GB8138156A patent/GB2094244B/en not_active Expired
- 1981-12-18 US US06/331,996 patent/US4504035A/en not_active Expired - Fee Related
- 1981-12-22 DE DE19813150732 patent/DE3150732A1/en active Granted
- 1981-12-23 CA CA000393171A patent/CA1168271A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2094244A (en) | 1982-09-15 |
| US4504035A (en) | 1985-03-12 |
| DE3150732A1 (en) | 1982-08-19 |
| FR2497158A1 (en) | 1982-07-02 |
| SE8107372L (en) | 1982-06-28 |
| DE3150732C2 (en) | 1988-01-21 |
| GB2094244B (en) | 1984-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |